Nissan Murano: Basic Inspection / Throttle Valve Closed Position Learning
Description
Throttle Valve Closed Position Learning is a function of ECM to learn the fully closed position of the throttle valve by monitoring the throttle position sensor output signal. It must be performed each time the harness connector of electric throttle control actuator or ECM is disconnected or electric throttle control actuator is cleaned.
For details, refer to Work Procedure.
Work Procedure
START
WITH CONSULT
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Turn ignition switch ON.
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Select “CLSD THL POS LEARN” in “WORK SUPPORT” mode.
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Follow the instructions on the CONSULT display.
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Turn ignition switch OFF and wait at least 10 seconds.
Check that throttle valve moves during the above 10 seconds by confirming the operating sound.
WITHOUT CONSULT
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Start the engine.
NOTE:
Coolant temperature is less than 25°C (77°F) before engine starts.
-
Warm up the engine until engine coolant temperature reaches 65°C (149°F).
-
Turn ignition switch OFF and wait at least 10 seconds.
NOTE:
Check that throttle valve moves during the above 10 seconds by confirming the operating sound.
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Description
Accelerator Pedal Released Position Learning is a function of ECM to learn the fully released position of the accelerator pedal by monitoring the accelerator pedal position sensor output signal...
Description
Idle Air Volume Learning is a function of ECM to learn the idle air volume that keeps engine idle speed within the specific range. It must be performed under the following conditions:
Each time the electric throttle control actuator or ECM is replaced...
Other information:
DTC Description
DTC DETECTION LOGICWhen the ignition switch is ON, TCM is unable to receive the CAN communications signal from AWD control unit continuously for 2 seconds or more. DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
U0102
LOST COMM (TRANSFER)
(Lost Communication With Transfer Case Control Module)
Diagnosis condition
When the ignition switch is ON
Signal
CAN communication signal
Threshold
TCM is unable to receive the CAN communications signal from AWD control unit
Diagnosis delay time
Continuously for 2 seconds or more
POSSIBLE CAUSE
AWD control unit
Harness or connector (CAN communication line is open or shorted)
FAIL-SAFENot changed from normal driving
DTC Confirmation Procedure
PREPARATION BEFORE WORK
If another “DTC CONFIRMATION PROCEDURE” occurs just before, turn ignition switch OFF and wait for at least 10 seconds, then perform the next test...
Inspection and Adjustment
INSTALLATIONAdjust parking brake pedal stroke. Refer to Inspection and Adjustment.
Perform parking brake break-in (drag on) operation by driving Nissan Murano vehicle under the following conditions:
Drive forward
Vehicle speed: Approx...